CN113661441B

CN113661441B - Lens driving device

Info

Publication number: CN113661441B
Application number: CN202080027399.6A
Authority: CN
Inventors: 朴相沃
Original assignee: LG Innotek Co Ltd
Current assignee: LG Innotek Co Ltd
Priority date: 2019-04-11
Filing date: 2020-04-06
Publication date: 2024-02-20
Anticipated expiration: 2040-04-06
Also published as: EP3955054A4; KR20200120123A; US20220155651A1; CN113661441A; EP3955054A1; WO2020209562A1

Abstract

The present embodiment relates to a lens driving apparatus including: a cover including an upper plate, a side plate, and an inner yoke; a base; a retainer; a coil; a magnet; and a lateral elastic member, wherein the holder includes a groove formed in an upper surface of the holder, and at least a portion of the inner yoke of the cover is inserted into the groove of the holder such that the holder is engaged with the inner yoke when the holder is rotated.

Description

Lens driving device

Technical Field

The present embodiment relates to a lens driving device.

Background

The 3D content is applied not only in games and cultures but also in many fields such as education, manufacturing, and autonomous driving. In order to acquire 3D content, a depth map is required. The depth information is information representing a spatial distance, and represents stereoscopic information of one point with respect to another point of the 2D image.

In recent years, time of flight (TOF) is attracting attention as a method of acquiring depth information. According to the TOF method, the distance to the object is calculated by measuring the time of flight, which is the time at which light is emitted and reflected. The biggest advantage of the ToF method is that it provides distance information in 3D space quickly and in real time. In addition, the user can obtain accurate distance information without applying a separate algorithm or hardware correction. Furthermore, accurate depth information can be obtained even when measuring very close objects or measuring moving objects.

However, in the case of the current ToF method, there is a problem in that the available information per frame, i.e., resolution, is low.

In order to improve the resolution, the number of pixels of the sensor may be increased, but in this case, there is a problem in that the volume and manufacturing cost of the camera module are greatly increased.

Disclosure of Invention

Subject matter of the technology

An object of the present embodiment is to provide a lens driving apparatus capable of improving resolution by being used in the ToF method.

In particular, it is an object of the present invention to provide a lens driving apparatus capable of performing Super Resolution (SR) technology.

Technical solution

The lens driving apparatus according to the present embodiment includes: a cover including an upper plate, a side plate extending from an outer periphery of the upper plate, and an inner yoke extending from an inner periphery of the upper plate; a base connected to the side plate of the cover; a retainer spaced apart from the base; a coil disposed on the base; a magnet provided on the holder and facing the coil; and a lateral elastic member movably connecting the holder to the base, wherein the holder may include a groove formed on an upper surface of the holder, and wherein at least a portion of the inner yoke of the cover may be inserted into the groove of the holder such that the holder hangs on the inner yoke when the holder is rotated.

The lens driving device includes an upper elastic member coupled to the holder, wherein the lateral elastic member includes an electric wire, wherein the upper elastic member includes a first coupling portion including a hole coupled to the first protrusion of the holder, a second coupling portion including a hole through which the electric wire passes, and a connection portion connecting the first coupling portion and the second coupling portion, and wherein one end of the electric wire may be coupled to the second coupling portion by solder.

The electric wire includes four electric wires so as to be disposed at each of four corners of the holder, respectively, wherein the second coupling portion of the upper elastic member includes four second coupling portions corresponding to the four electric wires, and wherein the upper elastic member may be integrally formed.

The holder includes a hole through which the electric wire passes, and a second protrusion protruding from an upper surface of the holder and disposed between the groove of the holder and the hole of the holder, wherein a distance between the upper surface of the second protrusion of the holder and the upper plate of the cover is a shortest distance between the holder and the upper plate of the cover, and wherein a damper connecting the second coupling portion of the upper elastic member and the second protrusion of the holder may be provided.

The lens driving device includes: a first substrate including a body portion provided on the base portion, and a terminal portion extending downward from an outer periphery of the body portion and including a plurality of terminals; and a second substrate disposed on an upper surface of the body portion of the first substrate and electrically connected to the first substrate, wherein the coil may be formed as a patterned coil on the second substrate.

The lens driving device includes a coupling member including a hole through which a wire passes and coupled to a lower surface of the base, wherein the base includes the hole through which the wire passes, wherein the first substrate includes the hole through which the wire passes, wherein the second substrate includes a recess recessed inward from an outer circumference of a corner of the second substrate to avoid the wire, and wherein the other end of the wire is coupled to the coupling member by solder.

The retainer comprises a protrusion protruding from a lateral surface of the retainer, wherein two protrusions of the retainer are formed on each of four lateral surfaces of the retainer, and wherein a distance between the protrusion of the retainer and the side plate of the cover is a shortest distance between the retainer and the side plate of the cover.

The holder includes a hole penetrating the holder in a direction parallel to the optical axis to expose an upper surface of the magnet, wherein a portion of the upper elastic member may have a shape corresponding to a shape of a portion of the hole of the holder.

The upper elastic member is non-overlapping with the groove of the holder in a direction parallel to the optical axis, wherein the holder is integrally formed.

The lens driving apparatus according to the present embodiment includes: a cover including an upper plate, a side plate extending from an outer periphery of the upper plate, and an inner yoke extending from an inner periphery of the upper plate; a stator including a base coupled to a side plate of the cover and a coil disposed on the base; a mover including a holder spaced apart from the base, a magnet disposed on the holder and facing the coil, and an upper elastic member coupled to the holder; and an electric wire connecting the stator and the upper elastic member of the mover, wherein the holder includes a groove formed on an upper surface of the holder, wherein the upper elastic member and the groove of the holder do not overlap in a direction parallel to the optical axis, and wherein at least a portion of the inner yoke of the cover is inserted into the groove of the holder such that the holder hangs on the inner yoke when the holder is rotated.

The camera device according to this embodiment includes: a printed circuit board; a sensor disposed on the printed circuit board; a base portion disposed on the printed circuit board; a retainer spaced apart from the base; a lens coupled to the holder; a coil disposed on the base; a magnet provided on the base and facing the coil; and a lateral elastic member connecting the holder to the base, wherein the lens may tilt with respect to the sensor when a current is applied to the coil.

The coil includes a first coil and a second coil disposed opposite to each other with respect to the optical axis, wherein when a current is applied to the first coil and the second coil, a repulsive force is generated between the first coil and the magnet, and an attractive force may be generated between the second coil and the magnet.

The holder includes a first side portion and a second side portion disposed opposite to each other, and a third side portion and a fourth side portion disposed opposite to each other, wherein the magnet includes a first magnet disposed on the first side portion of the holder, a second magnet disposed on the second side portion of the holder, a third magnet disposed on the third side portion of the holder, and a fourth magnet disposed on the fourth side portion of the holder, wherein the coil includes a first coil facing the first magnet, a second coil facing the second magnet, a third coil facing the third magnet, and a fourth coil facing the fourth magnet, wherein either one of an attractive force and a repulsive force is generated between the first coil and the first magnet, and the other one of the attractive force and the repulsive force is generated between the second coil and the second magnet, and wherein either one of the attractive force and the repulsive force can be generated between the third coil and the third magnet, and the other one of the attractive force and the repulsive force can be generated between the fourth coil and the fourth magnet.

The camera device according to the present embodiment includes: a printed circuit board; a sensor disposed on the printed circuit board; a base portion disposed on the printed circuit board; a retainer spaced apart from the base; a lens coupled to the holder; a filter coupled to the holder and disposed below the lens; a coil disposed on the base; a magnet provided on the holder and facing the coil; and a side elastic member for connecting the holder to the base, wherein the lens and the filter may tilt together with respect to the sensor when a current is applied to the coil.

Advantageous effects

With this embodiment, depth information can be acquired at high resolution without significantly increasing the number of pixels of the sensor.

Further, a high resolution image can be obtained by the SR technique from a plurality of low resolution images obtained from the lens driving apparatus according to the present embodiment.

Drawings

Fig. 1 is a perspective view of a lens driving apparatus according to the present embodiment.

Fig. 2 is a view of the lens driving apparatus according to the present embodiment.

Fig. 3 is a cross-sectional view of the lens driving apparatus according to the present embodiment as viewed from the line A-A of fig. 1.

Fig. 4 is a cross-sectional view of the lens driving apparatus according to the present embodiment as viewed from line B-B of fig. 1.

Fig. 5 is a cross-sectional view of the lens driving apparatus according to the present embodiment as viewed from line C-C of fig. 1.

Fig. 6 is a cross-sectional perspective view of the lens driving apparatus according to the present embodiment.

Fig. 7 is a perspective view showing the lens driving apparatus according to the present embodiment, with the cover removed.

Fig. 8 is a plan view showing the lens driving apparatus according to the present embodiment, with the cover removed.

Fig. 9 is an enlarged view illustrating a portion a of fig. 8.

Fig. 10 is an exploded perspective view of the lens driving apparatus according to the present embodiment.

Fig. 11 is a bottom exploded perspective view of the lens driving device according to the present embodiment.

Fig. 12 is an exploded perspective view of a partial configuration of the lens driving apparatus according to the present embodiment.

Fig. 13 is a bottom exploded perspective view of a partial configuration of the lens driving apparatus according to the present embodiment.

Fig. 14 is an exploded perspective view of a partial configuration of the lens driving apparatus according to the present embodiment.

Fig. 15 is a bottom exploded perspective view of a partial configuration of the lens driving apparatus according to the present embodiment.

Fig. 16 (a) is a perspective view showing a side elastic member of a lens driving apparatus according to the present embodiment and its related configuration, and fig. 16 (b) is a bottom perspective view showing a side elastic member of a lens driving apparatus according to the present embodiment and its related configuration.

Fig. 17 is a conceptual diagram conceptually showing a process of acquiring a plurality of images with Super Resolution (SR) by the lens driving apparatus according to the present embodiment, and fig. 17 (a) is the first embodiment, and fig. 17 (b) is the second embodiment, and fig. 17 (c) is the third embodiment.

Fig. 18 is a perspective view of the ToF camera device according to the present embodiment.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, the technical idea of the present invention is not limited to some embodiments to be described, but may be implemented in various forms, and one or more of the components may be selected, combined, and replaced among the embodiments to be used if within the scope of the technical idea of the present invention.

In addition, unless explicitly defined and described, terms (including technical and scientific terms) used in the embodiments of the present invention are generally understood by those of ordinary skill in the art to which the present invention belongs and may be construed according to meanings, and commonly used terms such as terms defined in dictionaries may be construed in consideration of meanings in the context of the related art.

In addition, the terminology used in the description of the embodiments of the invention is for the purpose of describing the embodiments and is not intended to be limiting of the invention.

In this specification, unless specified otherwise in a phrase, the singular form may include the plural form and when described as "at least one (or more than one) of a and B and C" it may include one or more of all combinations that may be combined with A, B and C.

In addition, terms such as first, second, A, B, (a), (b), etc. may be used to describe components of embodiments of the present invention. These terms are only used to distinguish one element from another element and do not limit the nature, order, or sequence of elements by the term.

Also, when an element is described as being 'connected', 'coupled' or 'interconnected' to another element, the element may not only be directly connected, coupled or interconnected to the other element, but also include the case of being 'connected', 'coupled' or 'interconnected' due to the presence of the other element between the other elements.

In addition, when components are described as being formed or disposed "on (over) or under" each component, the top (over) or the bottom (under) includes not only the case where two components are in direct contact with each other but also the case where one or more other components are formed or disposed between the two components. In addition, when expressed as "top (above)" or "bottom (below)", the meaning of not only the upward direction based on one component but also the downward direction based on one component is included.

Hereinafter, an optical apparatus according to the present embodiment will be described.

The optical apparatus may be any one of a hand-held phone, a mobile phone, a smart phone, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, a Personal Digital Assistant (PDA), a Portable Multimedia Player (PMP), and a navigation device. However, the type of the optical apparatus is not limited thereto, and any means for taking an image or a photograph may be included in the optical apparatus.

The optical device may include a body. The body may be in the form of a strip. The main body may have various structures such as a sliding type structure, a folding type structure, a swing type structure, and a rotation type structure in which two or more sub bodies are coupled to be movable with respect to each other. The body may include a case (a housing, a case, and a cover) forming an external appearance. For example, the body may include a front case and a rear case. The respective electronic components of the optical device may be embedded in a space formed between the front case and the rear case.

The optical device may comprise a display. The display may be disposed on one surface of the body of the optical device. The display may output an image. The display may output an image photographed by the camera.

The optical device may comprise a camera. The camera may comprise a time of flight (ToF) camera device. The ToF camera device may be disposed in front of the body of the optical apparatus. In this case, the ToF camera apparatus can be used for various types of biometric recognition of the user, such as face recognition and iris recognition, for security authentication of the optical device.

Hereinafter, a configuration of the ToF camera device according to the present embodiment will be described with reference to the drawings.

The ToF camera device may include a camera device. The ToF camera device may include a camera module.

The camera module may include a light emitting unit 1. The light emitting unit 1 may be a light emitting module, a light emitting unit, a light emitting assembly, or a light emitting device. The light emitting unit 1 may generate an output light signal and then irradiate the object. In this case, the light emitting unit 1 may generate and output an output light signal in the form of a pulse wave or a continuous wave. The continuous wave may be in the form of a sine wave or a square wave. By generating an output optical signal in the form of a pulse wave or a continuous wave, the ToF camera device can detect a phase difference between the output optical signal output from the light emitting unit 1 and an input optical signal input to the light receiving unit 2 of the ToF camera device after being reflected from an object. In the present specification, the output light refers to light output from the light emitting unit 1 and incident on the subject, and the input light may refer to light output from the light emitting unit 1, reaching the subject, reflected from the subject, and input to the ToF camera device. From the perspective of the object, the output light may be incident light and the input light may be reflected light. The light emitting unit 1 irradiates the generated output light signal to the subject for a predetermined exposure period (integration time). Here, the exposure period refers to one frame period. In the case of generating a plurality of frames, the set exposure period is repeated. For example, when the ToF camera apparatus photographs a subject with 20FPS, the exposure period is 1/20 seconds. And when 100 frames are generated, the exposure period may be repeated 100 times.

The light emitting unit 1 may generate a plurality of output light signals having different frequencies. The light emitting unit 1 may sequentially and repeatedly generate a plurality of output light signals having different frequencies. Alternatively, the light emitting unit 1 may simultaneously generate a plurality of output light signals having different frequencies.

The light emitting unit 1 may include a light source. The light source may generate light. The light source may output light. The light source may radiate light. The light generated by the light source may be infrared light having a wavelength of 770nm to 3000 nm. Alternatively, the light generated by the light source may be visible light having a wavelength of 380nm to 770 nm. The light source may include a Light Emitting Diode (LED). The light source may include a plurality of light emitting diodes arranged according to a predetermined pattern. In addition, the light source may include an Organic Light Emitting Diode (OLED) or a Laser Diode (LD).

The light emitting unit 1 may include a light modulating unit for modulating light. The light source may generate an output light signal in the form of a pulse wave or a continuous wave by repeatedly blinking (on/off) at regular time intervals. The predetermined time interval may be the frequency of the output optical signal. The flickering of the light source may be controlled by the light modulation unit. The light modulation unit may control the flicker of the light source such that the light source generates an output light signal in the form of a continuous wave or a pulse wave. The light modulation unit may control the light source by frequency modulation, pulse modulation, or the like to generate an output light signal in the form of a continuous wave or a pulse wave.

The light emitting unit 1 may comprise a diffuser. The diffuser may be a diffuser lens. The diffuser may be arranged in front of the light source. Light emitted from the light source may pass through the diffuser and be incident on the object. The diffuser may change the path of light emitted from the light source. The diffuser may collect light emitted from the light source.

The light emitting unit 1 may include a cover. The cover may be provided to cover the light source. The cover may be provided on the printed circuit board 4. The cover may include an upper plate having an aperture and a side plate extending from the upper plate.

The camera module may include a light receiving unit 2. The light receiving unit 2 may be a light receiving module, a light receiving unit, a light receiving assembly, or a light receiving device. The light receiving unit 2 may detect light emitted from the light emitting unit 1 and reflected from the object. The light receiving unit 2 may generate an input light signal corresponding to the output light signal output from the light emitting unit 1. The light receiving unit 2 may be disposed side by side with the light emitting unit 1. The light receiving unit 2 may be disposed immediately adjacent to the light emitting unit 1. The light receiving unit 2 may be disposed in the same direction as the light emitting unit 1.

The light receiving unit 2 may include a lens module. Light reflected from the object may pass through the lens module. The optical axis of the lens module and the optical axis of the sensor may be aligned. The lens module may be coupled to the holder 310. The lens module may be fixed to the holder 310. The lens module may be coupled to the holder 310 to move integrally with the holder 310. The lens module may be displaceable. The lens module may be tilted. The lens module may be moved to adjust the optical path. The lens module may change the path of light incident to the sensor by moving. The lens module may change a field angle (FOV) of incident light, a direction of FOV, or the like.

The light receiving unit 2 may include an optical filter. The filter may be coupled to the base 210. The optical filter may be disposed between the lens module and the sensor. The optical filter may be disposed on an optical path between the object and the sensor. The filter may filter light having a predetermined wavelength range. The filter may pass light of a particular wavelength. That is, the filter may be blocked by reflecting or absorbing light other than a specific wavelength. The filter may pass infrared rays and block light of wavelengths other than infrared rays. Alternatively, the filter may pass visible light and block light of wavelengths other than visible light. The filter may be movable. The filter may be fixed to the base 210. The filter may be coupled to a sensor base (not shown) that is separate from the base 210. In a modified embodiment, the filter may move while coupled to the holder 310.

The light receiving unit 2 may include a sensor. The sensor may sense light. The sensor may detect light and output the light as an electrical signal. The sensor may detect light having a wavelength corresponding to a wavelength of light output from the light source. The sensor may detect infrared light. Alternatively, the sensor may detect visible light.

The sensor may include: a pixel array that receives light passing through the lens module and converts the light into an electrical signal corresponding to the light; a driving circuit for driving a plurality of pixels included in the pixel array; and a readout circuit that reads out an analog pixel signal of each pixel. The readout circuit may generate a digital pixel signal (or image signal) by means of analog-to-digital conversion by comparing the analog pixel signal with a reference signal. Here, the digital pixel signal of each pixel included in the pixel array constitutes an image signal, and since the video signal is transmitted in units of frames, it can be defined as an image frame. That is, the image sensor may output a plurality of image frames.

The light receiving unit 2 may include an image synthesizing unit. The image synthesis unit may include an image processor that receives the image signal from the sensor and processes (e.g., interpolates, frame synthesizes, etc.) the image signal. Specifically, the image synthesizing unit may synthesize image signals (low resolution) of a plurality of frames into an image signal (high resolution) of one frame. That is, the image synthesizing unit may synthesize a plurality of image frames included in the image signal received from the sensor and generate a synthesis result as a synthesized image. The synthesized image generated by the image synthesizing unit may have a higher resolution than the plurality of image frames output from the sensor. That is, the image synthesizing unit may generate a high resolution image by a Super Resolution (SR) technique. The image synthesis unit may generate the high resolution image by SR technique. The image synthesizing unit may generate the high resolution image through a high resolution operation. The plurality of image frames may include image frames generated to have different optical paths from each other by movement of the filter.

The camera module may include a Printed Circuit Board (PCB) 4. The light emitting unit 1 and the light receiving unit 2 may be disposed on the printed circuit board 4. The printed circuit board 4 may be electrically connected to the light emitting unit 1 and the light receiving unit 2.

The camera module may include a coupling portion 3. The coupling portion 3 may be electrically connected to the printed circuit board 4. The coupling part 3 may be connected to the configuration of the optical device. The coupling portion 3 may comprise a connector 7 connected to a component of the optical device. The coupling portion 3 may include a base plate 5, and a connector 7 is provided on the base plate 5 and connected to the connection portion 6. The substrate 5 may be a PCB.

The camera module may include a connection portion 6. The connection portion 6 may connect the printed circuit board 4 and the coupling portion 3. The connection portion 6 may have flexibility. The connection portion 6 may be a Flexible Printed Circuit Board (FPCB).

The camera module may include a lens driving device.

Hereinafter, a configuration of the lens driving apparatus according to the present embodiment will be described with reference to the drawings.

Fig. 1 is a perspective view of a lens driving apparatus according to the present embodiment, fig. 2 is a view of the lens driving apparatus according to the present embodiment, fig. 3 is a cross-sectional view of the lens driving apparatus according to the present embodiment as viewed from line A-A of fig. 1, fig. 4 is a cross-sectional view of the lens driving apparatus according to the present embodiment as viewed from line B-B of fig. 1, fig. 5 is a cross-sectional view of the lens driving apparatus according to the present embodiment as viewed from line C-C of fig. 1, fig. 6 is a cross-sectional perspective view of the lens driving apparatus according to the present embodiment, fig. 7 is a perspective view showing the lens driving apparatus according to the present embodiment, in which a cover is removed, fig. 8 is a plan view showing the lens driving apparatus according to the present embodiment, in which a cover is removed, fig. 9 is an enlarged view showing a portion a of fig. 8, fig. 10 is an exploded perspective view of a lens driving device according to the present embodiment, fig. 11 is a bottom exploded perspective view of the lens driving device according to the present embodiment, fig. 12 is an exploded perspective view of a partial configuration of the lens driving device according to the present embodiment, fig. 13 is a bottom exploded perspective view of a partial configuration of the lens driving device according to the present embodiment, fig. 14 is an exploded perspective view of a partial configuration of the lens driving device according to the present embodiment, fig. 15 is a bottom exploded perspective view of a partial configuration of the lens driving device according to the present embodiment, fig. 16 (a) is a perspective view showing a side elastic member of the lens driving device according to the present embodiment and its related configurations, and fig. 16 (b) is a bottom perspective view showing the side elastic member of the lens driving apparatus according to the present embodiment and its related configuration.

The lens driving means may comprise a Voice Coil Motor (VCM). The lens driving device may include a lens driving motor. The lens driving device may include a lens driving actuator.

Functions such as Optical Image Stabilization (OIS) and 3D are added to enhance the functions of the mobile phone. In particular, 3D requires development to improve resolution. There is a method of improving resolution by interpolation (adding data) using S/W, but resolution correction using S/W is limited, so the present embodiment proposes an invention of realizing higher resolution by combining mechanical movement and S/W.

In ToF, a lens driving device is required in the light emitting unit 1 or the light receiving unit 2, which is capable of driving a lens that can improve resolution based on additional information while shifting the lens to a specific position, and for this reason, the present embodiment may include details regarding this.

With the development of 5G and the video call, SNS, etc. using a front-end camera becoming widespread, it is necessary to improve the image quality of the front-end unit. This embodiment may include details for solving this problem, and may include details of the invention applicable to miniaturized OIS.

In this embodiment, the resolution may be improved by creating additional data using mechanical motion. A Closed Loop Autofocus (CLAF) function using a positional element may be added to the present embodiment. In this case, the CLAF may be realized by integrating the driver IC using the positional element. In this embodiment, the inner yoke 130 may be applied to satisfy impact reliability.

In the lens driving apparatus according to the present embodiment, the magnet 320 is assembled to the driving body (mover 300), and the coil 220 and the position element (sensor 260) may be fixed to the fixing unit (stator 200). In the lens driving device, the driving body can move left and right (in the horizontal direction). The lens driving apparatus of the present embodiment may include four-value actuators and algorithms that sequentially move to predetermined positions.

The lens driving device may include a cover 100. The cover 100 may be a bracket. The cover 100 may include a "cover cap". The cover 100 may be disposed around the holder 310. The cover 100 may be coupled to the base 210. The cover 100 may house a retainer 310 therein. The cover 100 may form the external appearance of the lens driving device. The cover 100 may have a hexahedral shape with an open lower surface. The cover 100 may be a non-magnetic material. The cover 100 may be formed of metal. The cover 100 may be formed of a metal plate. The protrusion 121 of the cover 100 may be connected to the ground portion of the printed circuit board by solder. Thereby, the cover 100 may be grounded. The cover 100 may block electromagnetic interference (EMI). In this case, the cover 100 may be referred to as an 'EMI shield'. The cover 100 is a final assembled part and may protect the product from external impact. The cover 100 may be formed of a material having a thin thickness and high strength.

The cover 100 may include an upper plate 110. The cover 100 may include side panels 120. The cover 100 may include an upper plate 110 and a side plate 120 extending from an outer circumference of the upper plate 110. The cover 100 may include an upper plate 110 having holes and a side plate 120 extending downward from the outer periphery or edge of the upper plate 110. The upper plate 110 of the cover 100 may include holes corresponding to the holes 317 of the holder 310. The lower end of the side plate 120 of the cover 100 may be disposed on the stepped portion 215 of the base 210. The inner surface of the side plate 120 of the cover 100 may be fixed to the base 210 by an adhesive. The side plate 120 of the cover 100 may include a plurality of side plates. The plurality of side plates may include first to fourth side plates. The side plate 120 of the cover 100 may include first and second side plates disposed opposite to each other, and third and fourth side plates disposed opposite to each other between the first and second side plates.

The cover 100 may include an inner yoke 130. The cover 100 may include an inner yoke 130 extending from an inner circumference of the upper plate 110. At least a portion of the inner yoke 130 may be inserted into the recess 311 of the holder 310. At least a portion of the inner yoke 130 may be disposed in the recess 311 of the holder 310. Thus, when the holder 310 rotates, the holder 310 may hang on the inner yoke 130. That is, the rotation of the holder 310 may be limited to a certain angle or less by the coupling structure of the recess 311 of the holder 310 and the inner yoke 130. The inner yoke 130 may overlap the holder 310 in a circumferential direction of a virtual circle centered on the optical axis. The inner yoke 130 may be provided for satisfying impact reliability and convenience in lens assembly.

The inner yoke 130 may include a plurality of inner yokes. The inner yoke 130 may include four inner yokes. The inner yoke 130 may include first to fourth inner yokes.

The inner yoke 130 may be spaced apart from the holder in the vertical direction (height direction) by 80 μm to 200 μm. The inner yoke 130 may be spaced apart from the holder 310 inwardly and outwardly by 80 μm to 200 μm.

The lens driving apparatus may include a stator 200. The stator 200 may be a fixed part when the mover 300 moves. The stator 200 can be kept in a fixed state at all times with respect to the sensors arranged on the printed circuit board 4.

The stator 200 may include a base 210. The base 210 may be coupled with the side plate 120 of the cover 100. The base 210 may be disposed below the holder 310. The base 210 may be spaced apart from the retainer 310. The base 210 may be coupled to the side elastic member 400. The filter may be coupled to the base 210.

The base 210 may include an aperture 211. The hole 211 may be a hollow hole penetrating a central portion of the base 210 in the optical axis direction. The hole 211 may penetrate a central portion of the base 210 in the optical axis direction. A filter may be disposed in the aperture 211.

The base 210 may include an aperture 212. The holes 212 may be wire through holes through which wires pass. The wire may pass through the aperture 212. The hole 212 may be formed with a diameter larger than that of the wire.

The base 210 may include a protrusion 213. The protrusion 213 may be formed on an upper surface of the base 210. The protruding portion 213 may be formed along an inner circumferential surface of the base 210. The protruding portion 213 may support inner circumferential surfaces of the first and second substrates 230 and 240. The upper surface of the protrusion 213 may be disposed at a height corresponding to the upper surface of the second substrate 240, or disposed higher than the upper surface of the first substrate 230. That is, the protruding portion 213 may be formed at a height corresponding to the second substrate 240, or the protruding portion 213 may protrude more with respect to the first substrate 230.

The base 210 may include a protrusion 214. The protrusion 214 may protrude outward from the protrusion 213. The protrusion 214 may protrude from an upper surface of the base 210. The protrusion 214 may prevent rotation of the first and second substrates 230 and 240 by the coupling structure of the first and second substrates 230 and 240. The protrusions 214 may also be used as reference points for assembly. The protrusion 214 may include a plurality of protrusions. Three protrusions 214 may be provided.

The base 210 may include a stepped portion 215. The side plate 120 of the cover 100 may be disposed on the stepped portion 215 of the base 210. The stepped portion 215 may protrude from a lateral surface of the base 210. A step may be formed on a side surface of the base 210 by the step portion 215.

The base 210 may include a recess 216. The recess 216 may be a hall sensor receiving recess in which a hall sensor is disposed. The recess 216 may be formed in a shape corresponding to the sensor 260. The grooves 216 may include a plurality of grooves. The recess 216 may include two recesses for receiving two sensors 260.

The base 210 may include an aperture 217. The hole 217 may be a solder placement hole in which solder is disposed, which is formed in the base 210 separately from the hole 212 through which the wire passes. The hole 217 may penetrate the base 210 in a direction parallel to the optical axis. Solder disposed in the holes 217 may be connected to the coupling member 250.

The base 210 may include a recess 218. The recess 218 may be a coupling member receiving recess in which the coupling member 250 is disposed. At least a portion of the groove 218 may be formed to have a shape corresponding to at least a portion of the coupling member 250. However, the coupling member 250 may be integrally formed with the base 210 through an insert.

The base 210 may include a protrusion 219. The protrusion 219 may be a terminal supporting portion supporting the terminal portion 232 of the first substrate 230. The protrusion 219 may protrude from a lower surface of the base 210. The protrusion 219 may protrude to a length corresponding to the terminal 232 of the first substrate 230.

The stator 200 may include coils 220. The coil 220 may be disposed on the base 210. The coil 220 may be disposed between the magnet 320 and the base 210. The coil 220 may be formed as a pattern coil on the second substrate 240. The coil 220 may be formed as a fine pattern coil on the second substrate 240. At this time, the second substrate 240 may be formed of FPCB. Coil 220 may face magnet 320. The coil 220 may be disposed to face the magnet 320. Coil 220 may electromagnetically interact with magnet 320. When a current is supplied to the coil 220 to form an electromagnetic field around the coil 220, the magnet 320 may move relative to the coil 220 through electromagnetic interaction between the coil 220 and the magnet 320.

The coil 220 may include a plurality of coils. The coil 220 may include four coils. The coil 220 may include first to fourth coils. Two of the four coils may be used to move the mover 300 in the x-axis direction. At this time, the two coils may be electrically connected. Two other of the four coils may be used to move the mover 300 in the y-axis direction. Meanwhile, when four coils are simultaneously used, the mover 300 may move in a diagonal direction. In this case, the two coils may be electrically connected. Meanwhile, a coil for moving the mover 300 in the x-axis direction and a coil for moving the mover 300 in the y-axis direction may not be connected to each other. As a modified embodiment, a plurality of coils may be provided in the diagonal direction. A forward current and a reverse current may be selectively applied to each of the plurality of coils.

The stator 200 may include a first substrate 230. The first substrate 230 may include a Flexible Printed Circuit Board (FPCB). The first substrate 230 may electrically connect the coil 220 and the printed circuit board 4 to each other.

The first substrate 230 may include a body portion 231. The body portion 231 may be disposed on the base 210. The body portion 231 may be disposed on an upper surface of the base 210. The body portion 231 may be disposed between the base 210 and the second substrate 240.

The body portion 231 may include a hole 231a. The hole 231a may be a wire through hole through which a wire passes. The wire may pass through the hole 231a. The diameter of the hole 231a may be larger than the diameter of the wire.

The body portion 231 may include a terminal 231b. The terminal 231b may be formed on an upper surface of the body portion 231. The terminal 231b of the first substrate 230 may be electrically connected to the terminal 244 of the second substrate 240. The terminal 231b of the first substrate 230 may be coupled to the terminal 244 of the second substrate 240 by a conductive material.

The body portion 231 may include a hole 231c. The hole 231c may be a hollow hole penetrating a central portion of the body portion 231 in the optical axis direction. The hole 231c may be formed with a diameter corresponding to the protrusion 213 of the base 210.

The body portion 231 may include a groove 231d. A groove 231d may be formed on an inner circumferential surface of the hole 231c. The groove 231d of the first substrate 230 may be formed in a shape corresponding to the protrusion 214 of the base 210. The groove 231d of the first substrate 230 may be structurally coupled with the protrusion 214 of the base 210 to prevent the first substrate 230 from rotating relative to the base 210.

The first substrate 230 may include a terminal portion 232. The terminal portion 232 may extend downward from the outer circumference of the body portion 231. The terminal portion 232 may include two terminal portions, one on each side of the body portion 231.

The terminal unit 232 may include a terminal 232a. The terminal 232a may be electrically connected to a terminal of the printed circuit board 4. The terminal 232a may include a plurality of terminals. The plurality of terminals may include a first terminal and a second terminal. The first and second terminals may be two (+) and (-) terminals of the coil input terminal for x-axis movement of the mover 300. The plurality of terminals may include third to sixth terminals. The third to sixth terminals may correspond to four terminals of two input and output terminals of a hall element, which is a sensor 260 for detecting x-axis movement of the mover 300. The first to sixth terminals may be formed on any one of the two terminal units 232. The plurality of terminals may include a seventh terminal and an eighth terminal. The seventh terminal and the eighth terminal may be (+) and (-) terminals of two coil input terminals for y-axis movement of the mover 300. The plurality of terminals may include a ninth terminal to a twelfth terminal. The ninth to twelfth terminals may correspond to four terminals of two input and output terminals of a hall element, which is the sensor 260 for detecting y-axis movement of the mover 300. The seventh to twelfth terminals may be formed on the other of the two terminal units 232. As a modified embodiment, when one terminal of two hall elements is used as a common terminal, 11 terminals may be required in total. As a modified embodiment, when the hall element integrated driver IC is applied instead of the hall element, each of the four terminals corresponds to I2C communication or when the address of each driver IC is different, only four terminals may be required.

The lens driving means may include solder 235. Solder 235 may be disposed in the aperture 217 of the base 210. Solder 235 may connect the first substrate 230 and the coupling member 250. Solder 235 may electrically connect the first substrate 230 and the coupling member 250. Solder 235 may couple the first substrate 230 and the coupling member 250. Solder 235 may be disposed on the first substrate 230 and the base 210. Solder 235 may be disposed on the coupling member 250 and the base 210.

The stator 200 may include a second substrate 240. The second substrate 240 may include a fine pattern coil (FP). The second substrate 240 may be disposed on the body portion 231 of the first substrate 230. The second substrate 240 may be disposed on an upper surface of the body portion 231 of the first substrate 230. The second substrate 240 may be electrically connected to the first substrate 230.

The second substrate 240 may include a recess 241. The concave portion 241 may be formed to escape the wire by being recessed from the outer circumference of the corner of the second substrate 240. As a modified embodiment, the recess 241 may be omitted and a hole through which the wire passes may be formed in the second substrate 240.

The second substrate 240 may include a hole 242. The hole 242 may be a hollow hole penetrating a central portion of the second substrate 240 in the optical axis direction. The diameter of the hole 242 may correspond to the protrusion 213 of the base 210.

The second substrate 240 may include a groove 243. The groove 243 may be formed on an inner circumferential surface of the hole 242. The groove 243 of the first substrate 230 may be formed in a shape corresponding to the protrusion 214 of the base 210. The groove 243 of the second substrate 240 may be structurally coupled with the protrusion 214 of the base 210 to prevent the second substrate 240 from rotating relative to the base 210.

The second substrate 240 may include a terminal 244. The terminal 244 may be formed on a lower surface of the second substrate 240. The terminal 244 may be coupled to the terminal 231b of the first substrate 230 by solder.

The stator 200 may include a coupling member 250. The coupling member 250 may be a base terminal inserted into the base 210. The coupling member 250 may be coupled to the base 210. The coupling member 250 may be coupled to a lower surface of the base 210.

The coupling member 250 may include a hole 251. The hole 251 may be a wire through hole through which a wire passes. The wire may pass through the hole 251. The coupling member 250 may be coupled to the vicinity of the hole 251 by solder.

The coupling member 250 may include a coupling portion 252. The coupling member 250 may be disposed at a position corresponding to the hole 217 of the base 210. The coupling member 250 may be connected to the solder 235 connected to the first substrate 230. The coupling portion 252 may be fixed to the base 210.

The stator 200 may include a sensor 260. The sensor 260 may include a hall sensor. The sensor 260 may include a hall element. The sensor 260 may include a hall IC. The sensor 260 may include a hall sensor integrated driver IC. The hall sensor may detect the magnetic force of the magnet 320. As the magnet 320 moves, the distance between the magnet 320 and the hall sensor may change, and accordingly, the value of the magnetic force sensed by the hall sensor may change. Thus, the hall sensor can detect the position of the magnet 320 in real time.

The sensor 260 may include a plurality of sensors. The sensor 260 may include two sensors. The sensor 260 may include a first sensor and a second sensor. The first sensor may detect movement of the mover 300 in the x-axis direction, and the second sensor may detect movement of the mover 300 in the y-axis direction.

The lens driving apparatus may include a mover 300. The mover 300 may move relative to the stator 200 when current is applied to the coils 220. The lens may be coupled to the mover 300. The mover 300 may be movably disposed with respect to the stator 200. The mover 300 may move in a horizontal direction including an x-axis direction and a y-axis direction. The mover 300 may move in a direction perpendicular to the optical axis.

The mover 300 may include a holder 310. The retainer 310 may be spaced apart from the base 210. The holder 310 may be integrally formed. The holder 310 may be coupled to a lens. The retainer 310 may be disposed in the cover 100. The holder 310 may be formed of a material different from that of the cover 100. The holder 310 may be formed of an insulating material. The retainer 310 may be formed of an injection molded material. The outer lateral surface of the retainer 310 may be spaced apart from the inner surface of the side plate 120 of the cover 100. The magnet 320 may be disposed on the holder 310. The holder 310 and the magnet 320 may be coupled by an adhesive. The upper elastic member 330 may be coupled to an upper surface of the holder 310. The retainer 310 may be coupled to the upper elastic member 330 by heat sealing and/or adhesive. The additional elastic member may not be coupled to the lower surface of the holder 310. The adhesive bonding the holder 310 and the magnet 320 and bonding the holder 310 and the upper elastic member 330 may be an epoxy resin cured by any one or more of Ultraviolet (UV) light, heat, and laser. In the present embodiment, the holder 310 may have a form in which the bobbin and the housing are integrally formed.

The retainer 310 may include a groove 311. The recess 311 may be an inner yoke insertion recess into which the inner yoke 130 is inserted. A groove 311 may be formed on an upper surface of the holder 310. The groove 311 may have a width wider than that of the inner yoke 130. The bottom surface of the recess 311 and the lower surface of the inner yoke 130 may be spaced apart. The recess 311 may include a plurality of recesses. The grooves 311 may include four grooves. The grooves 311 may be formed in the number corresponding to the number of the inner yokes 130.

The retainer 310 may include a first protrusion 312. The first protrusion 312 may be a coupling protrusion coupled to the upper elastic member 330. The first protrusion 312 may be inserted into the hole 331a of the first coupling portion 331 of the upper elastic member 330. An adhesive may be applied to the first protrusion 312 and the first coupling portion 331 of the upper elastic member 330.

The retainer 310 may include a protrusion 312a. The protrusion 312a may be disposed outside the second coupling portion 332 of the upper elastic member 330. The protruding portion 312a may protrude from the upper surface of the holder 310. The upper surface of the protruding portion 312a may be disposed at a position higher than that of the upper elastic member 330. The protruding portion 312a may be a configuration for preventing the upper elastic member 330 from being deformed.

The retainer 310 may include a hole 313. The hole 313 may be a wire through hole through which a wire passes. The wire may pass through the hole 313. The diameter of the hole 313 may be larger than the diameter of the wire. The aperture 313 may have a wider width when the aperture 313 travels at least partially downward.

The retainer 310 may include a second protrusion 314. The second protrusion 314 may be an upper stop that mechanically limits the upper travel of the retainer 310. The second protrusion 314 may protrude from the upper surface of the holder 310. The second protrusion 314 may be disposed between the groove 311 of the holder 310 and the hole 313 of the holder 310. The second protrusion 314 may overlap the upper plate 110 of the cover 1000 in a vertical direction (a direction parallel to the optical axis). The distance between the upper surface of the second protrusion 314 of the holder 310 and the upper plate 110 of the cover 100 may be the shortest distance between the holder 310 and the upper plate 110 of the cover 100. That is, when the holder 310 moves upward, the second protrusion 314 collides with the upper plate of the cover 100. The second protrusion 314 may mechanically limit the upward stroke of the retainer 310.

The retainer 310 may include a protrusion 315. The tab 315 may be a side stop that mechanically limits the horizontal travel of the retainer 310. The protrusion 315 may protrude from a lateral surface of the holder 310. The protrusion 315 may overlap the side plate 120 of the cover 100 in a horizontal direction (a direction perpendicular to the optical axis). The distance between the protrusion 315 of the holder 310 and the side plate 120 of the cover 100 may be the shortest distance between the holder 310 and the side plate 120 of the cover 100. The protrusion 315 of the holder 310 may mechanically limit the travel of the holder 310 in the horizontal direction.

The protrusion 315 may include a plurality of protrusions 315. Two protrusions 315 may be formed on each of four lateral surfaces of the holder 310. A total of eight protrusions 315 may be formed. However, as a modified embodiment, the number of the protruding portions 315 may be 7 or less or 9 or more.

Retainer 310 may include a hole 316. The hole 316 may be an adhesive injection hole for injecting an adhesive for bonding the magnet 320 to the holder 310. The hole 316 may penetrate the holder 310 in a direction parallel to the optical axis. Thus, the hole 316 may expose the upper surface of the magnet 320. An adhesive for bonding the magnet 320 to the holder 310 may be injected through the hole 316.

The retainer 310 may include an aperture 317. The hole 317 may be a hollow hole penetrating the central portion of the holder 310 in the optical axis direction. The inner circumferential surface of the holder 310 may be formed as a curved surface. The inner circumferential surface of the holder 310 may be formed in a screw type or a non-screw type for Active Alignment (AA).

The retainer 310 may include a protrusion 318. The projection 318 may be a lower stop that mechanically limits the lower travel of the retainer 310. The protrusion 318 may overlap the second substrate 240 and/or the base 210 in the z-axis direction (vertical direction, height direction, and direction parallel to the optical axis). As the retainer 310 moves downward, the protrusion 318 of the retainer 310 may collide with any one or more of the second substrate 240 and the base 210. The protrusion 318 of the retainer 310 may mechanically limit the downstroke of the retainer 310. The protrusion 318 may include a plurality of protrusions. The protrusion 318 may include four protrusions. Four or more protrusions 318 may be formed.

The retainer 310 may include a recess 319. The groove 319 may be a magnet accommodating groove in which the magnet 320 is arranged. The recess 319 may receive at least a portion of the magnet 320. The groove 319 may be formed in a shape corresponding to at least a portion of the magnet 320. The groove 319 may include a plurality of grooves. The grooves 319 may include four grooves. The grooves 319 may be formed in the number corresponding to the number of the magnets 320.

Mover 300 may include a magnet 320. The magnet 320 may be provided on the holder 310. The magnet 320 may be coupled to the underside of the holder 310. The magnet 320 may be coupled to the holder 310 such that a lower surface of the holder 310 is open. The magnet 320 may face the coil 220. Magnet 320 may electromagnetically interact with coil 220. The magnet 320 may be disposed on a sidewall of the holder 310. At this time, the magnet 320 may be a flat magnet having a flat plate shape. As a modified embodiment, the magnet 320 may be disposed at a corner between the sidewalls of the holder 310. At this time, the magnet 320 may be a corner magnet having a hexahedral shape with an inner lateral surface wider than an outer lateral surface.

Magnet 320 may include a plurality of magnets. Magnet 320 may include four magnets. The magnet 320 may include first to fourth magnets. The magnets 320 may be formed in a number corresponding to the number of the coils 220.

The mover 300 may include an upper elastic member 330. The upper elastic member 330 may be coupled to the holder 310. The upper elastic member 330 may be integrally formed. A portion of the upper elastic member 330 may have a shape corresponding to a shape of a portion of the hole 316 of the holder 310. That is, the upper elastic member 330 may not vertically overlap the hole 316 of the holder 310. The upper elastic member 330 may have a relief shape so as not to interfere with the hole 316 of the holder 310. The upper elastic member 330 may not overlap with the groove 311 of the holder 310 in a direction parallel to the optical axis (vertical direction). The upper elastic member 330 may include a relief shape to avoid interference with the inner yoke 130. The upper elastic member 330 may not intrude into the groove 311 of the holder 310. The upper elastic member 330 may include a first portion having a shape corresponding to a shape of a portion of the hole 316 of the holder 310. The upper elastic member 330 may include a spring. The upper elastic member 330 may include a plate spring. At least a portion of the upper elastic member 330 may have elasticity.

In the present embodiment, the upper elastic member 330 may not be used as a wire. That is, the current may not be applied to the upper elastic member 330. However, as a modified embodiment, the upper elastic member 330 may be used as a wire.

The upper elastic member 330 may include a first coupling portion 331. The first coupling portion 331 may be coupled to the holder 310. The upper elastic member 330 may be coupled to the holder 310 in a plurality of portions. The upper elastic member 330 may be coupled to the holder 310 at eight positions.

The first coupling portion 331 may include a hole 331a. The hole 331a may be a coupling hole coupled to the first protrusion 312 of the holder 310. The hole 331a may be coupled to the first protrusion 312 of the holder 310. The hole 331a may have a diameter corresponding to that of the first protrusion 312 of the holder 310.

The first coupling portion 331 may include a cut-out portion 331b. The cutout portion 331b may extend from the hole 331a of the first coupling portion 331a to a smaller width than the hole 331a. In order to prevent the first coupling portion 331 from rotating with respect to the holder 310, an adhesive may be applied to the cutout portion 331b.

The upper elastic member 330 may include a second coupling portion 332. The second coupling portion 332 may be coupled to an electrical wire. The second coupling portion 332 of the upper elastic member 330 may include four second coupling portions 332 corresponding to four wires. In this case, the entire upper elastic member 330 including the four second coupling parts 332 may be integrally formed.

The second coupling portion 332 may include a hole 332a. The hole 332a may be a wire through hole through which a wire passes. The wire may pass through the hole 332a. The hole 332a may be formed with a diameter larger than that of the electric wire.

The upper elastic member 330 may include a connection portion 333. The connection portion 333 may connect the first coupling portion 331 and the second coupling portion 332. The connection portion 333 may have elasticity. The connection portion 333 may include a bent portion.

The lens driving device may include a lateral elastic member 400. The lateral elastic member 400 may connect the stator 200 and the mover 300. The lateral elastic member 400 may movably connect the mover 300 to the stator 200. The lateral elastic member 400 may movably connect the holder 310 to the base 210.

The lateral elastic member 400 may include an electric wire. The upper end of the electric wire may be coupled to the second coupling portion 332 of the upper elastic member 330 by the first solder 410. The lower end of the wire may be coupled to the coupling member 250 by the second solder 420. At this time, either one of the upper end and the lower end of the electric wire may be referred to as one end, and the other may be referred to as the other end. The lateral elastic member 400 may include a wire spring. At least a portion of the lateral elastic member 400 may have elasticity. The lower ends of the wires may be connected to base terminals inserted into the base 210. As a modified embodiment, the lower ends of the wires may be connected to the first substrate 230 or the second substrate 240. In this embodiment, the lateral elastic member 400 may not be used as a wire. That is, no current may be applied to the lateral elastic member 400. However, as a modified embodiment, the lateral elastic member 400 may be used as a wire.

The electrical wire may include a plurality of electrical wires. The wires may include four wires. The electric wires may include first to fourth electric wires. The wires may include four wires such that one wire may be disposed at each of the four corners of the holder 310. That is, the electric wire may be composed of four electric wires in total. However, as a modified embodiment, five or more wires may be provided.

The lens driving device may include a damper (not shown). The damper may connect the upper elastic member 330 and the holder 310. The damper may connect the second coupling portion 332 of the upper elastic member 330 and the second protrusion 314 of the holder 310. The damper can prevent an oscillation phenomenon that may occur in the feedback control.

Hereinafter, a method of acquiring a high resolution image using a Super Resolution (SR) technique by the lens driving apparatus according to the present embodiment will be described with reference to the accompanying drawings.

Fig. 17 is a conceptual diagram conceptually illustrating a process of acquiring a plurality of images with Super Resolution (SR) by the lens driving apparatus according to the present embodiment, fig. 17 (a) is the first embodiment, fig. 17 (b) is the second embodiment, and fig. 17 (c) is the third embodiment.

Although the resolution of 3D is determined according to the pixel size of the ToF sensor as in the first embodiment of fig. 17 (a), the resolution may be increased by 4 times or more by moving a lens to secure data of four additional positions. At this time, most cases overlap with the environment have two pieces of data, and in this case, a method using an average value may be suitable. That is, in the first embodiment, P1 'and P2' "can be reflected on the improvement of resolution by using the average value.

In the case of the second embodiment of fig. 17 (b), the same effect can be exhibited while increasing the driving stroke by 1.414 times as compared with the first embodiment. In particular, if OIS diagonal driving is applied, current of one axis may be used for driving, and when a linear direction is applied, current may be applied to each of the x-axis and the y-axis. As in the first embodiment, in the case where data overlap, resolution can be further improved by averaging two data in the same manner.

The case of the third embodiment of fig. 17 (c) is a method of improving resolution by further increasing the number of data compared with the first and second embodiments. At this time, the driving stroke may be set to a value between 0.5 and 1 times as large as the pixel size.

If the moving distance is small, 1 or more times may be applied. The moving distance may be applied as an integer multiple of the sensor size or based on an integer multiple of the diagonal direction.

In this embodiment, both the lens and the magnet 320 have been described as coupled to the holder 310, but in a modified embodiment, the holder 310 may include a bobbin and a housing such that the lens may be coupled to the bobbin and the magnet 320 may be coupled to the housing. In a modified embodiment, the bobbin and the housing may be connected by an elastic member. At this time, the coil may be provided on the bobbin, and the bobbin may be moved in the optical axis direction (vertical direction) when a current is applied to the coil. In a modified embodiment, the inner yoke 130 may be disposed in a groove formed on an upper surface of the bobbin. Meanwhile, in a modified embodiment, the magnet 320 may be provided on the bobbin.

The camera device according to the modified embodiment may include: a printed circuit board 4; a sensor provided on the printed circuit board 4; a base 210, the base 210 being disposed on the printed circuit board 4; a retainer 310, the retainer 310 being spaced apart from the base 210; a lens coupled to the holder 310; a coil 220, the coil 220 being disposed on the base 210; a magnet 320, the magnet 320 being disposed on the holder 310 and facing the coil 220; and a lateral elastic member 400, the lateral elastic member 400 for connecting the holder 310 to the base 210. In the present modified embodiment, the lens may be tilted with respect to the sensor when current is applied to the coil 220. That is, according to the present modified embodiment, the lens may be tilted to perform the super resolution technique.

The coil 220 may include a first coil and a second coil disposed opposite to each other with respect to the optical axis. When a current is applied to the first coil and the second coil, a repulsive force may be generated between the first coil and the magnet 320, and an attractive force may be generated between the second coil and the magnet 320. Thereby, tilting of the lens provided on the holder 310 to which the magnet 320 is coupled may occur.

The holder 310 may include: a first side portion and a second side portion disposed opposite each other; and third and fourth side portions disposed on opposite sides from each other. Magnet 320 may include: a first magnet disposed on a first side portion of the holder; a second magnet disposed on a second side portion of the holder; a third magnet disposed on a third side portion of the holder; and a fourth magnet disposed on a fourth side portion of the holder. The coil may include: a first coil facing the first magnet; a second coil facing the second magnet; a third coil facing the third magnet; and a fourth coil facing the fourth magnet. Either one of the attractive force and the repulsive force may be generated between the first coil and the first magnet, and the other one of the attractive force and the repulsive force may be generated between the second coil and the second magnet. Either one of an attractive force and a repulsive force may be generated between the third coil and the third magnet, and the other one of the attractive force and the repulsive force may be generated between the fourth coil and the fourth magnet. Thereby, the lens provided on the holder 310 to which the magnet 320 is coupled may be inclined in two or more directions.

Meanwhile, the attractive force and repulsive force generated between the coil 220 and the magnet 320 may be determined by the direction of the current applied to the coil, the direction in which the coil is set, the direction in which the polarity of the magnet is set, and the like. That is, in order to obtain a desired electromagnetic force between the coil 220 and the magnet 320, the arrangement direction of the coil and the arrangement direction of the polarity of the magnet may be determined in the design process.

The camera device according to the modified embodiment may include: a printed circuit board 4; a sensor provided on the printed circuit board 4; a base 210, the base 210 being disposed on the printed circuit board 4; a retainer 310, the retainer 310 being spaced apart from the base 210; a lens coupled to the holder 310; a filter coupled to the holder 310 and disposed under the lens; a coil 220, the coil 220 being disposed on the base 210; a magnet 320, the magnet 320 being disposed on the holder 310 and facing the coil 220; and a lateral elastic member 400, the lateral elastic member 400 for connecting the holder 310 to the base 210. In the present modified embodiment, the lens and the filter may be tilted together with respect to the sensor when a current is applied to the coil 220. That is, according to this modified example, the filter may be tilted to perform the super-resolution technique.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, it will be understood by those skilled in the art that the present invention may be embodied in other specific forms without changing the technical spirit or essential characteristics. Accordingly, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive.

Claims

1. A camera apparatus, comprising:

a printed circuit board;

the sensor is arranged on the printed circuit board;

a cover including an upper plate, a side plate extending from an outer periphery of the upper plate, and an inner yoke extending from an inner periphery of the upper plate;

a base coupled to the side plate of the cover;

a retainer spaced apart from the base;

a coil disposed on the base;

a magnet provided on the holder and facing the coil;

a lens having an optical axis and coupled to the holder; and

a filter coupled to the holder and disposed between the lens and the sensor;

a lateral elastic member movably connecting the holder to the base,

Wherein the holder includes a groove formed on an upper surface thereof,

wherein at least a portion of the inner yoke of the cover is inserted into the groove of the holder such that the holder hangs on the inner yoke when the holder is rotated, and

wherein the lens and the filter tilt together with respect to the sensor when a current is applied to the coil.

2. The camera device of claim 1, comprising an upper resilient member coupled to the retainer,

wherein the lateral elastic member comprises an electrical wire,

wherein the upper elastic member includes a first coupling portion including a hole coupled to the first protrusion of the holder, a second coupling portion including a hole through which the electric wire passes, and a connection portion connecting the first coupling portion and the second coupling portion, and

wherein one end of the electric wire is coupled to the second coupling portion by solder.

3. The camera device according to claim 2, wherein the electric wires include four electric wires respectively provided on four corners of the holder,

Wherein the second coupling portion of the upper elastic member includes four second coupling portions corresponding to the four electric wires, and

wherein the upper elastic member is integrally formed.

4. The camera device according to claim 2, wherein the holder includes a hole through which the electric wire passes, and a second protruding portion protruding from the upper surface of the holder and provided between the groove of the holder and the hole of the holder,

wherein a distance between the upper surface of the second protrusion of the retainer and the upper plate of the cover is a shortest distance between the retainer and the upper plate of the cover, and

wherein a damper connecting the second coupling portion of the upper elastic member and the second protrusion of the retainer is provided.

5. The camera device of claim 2, comprising:

a first substrate including a body portion provided on the base portion and a terminal portion extending downward from an outer periphery of the body portion and including a plurality of terminals;

a second substrate disposed on an upper surface of the body portion of the first substrate and electrically connected to the first substrate;

Wherein the coil is formed as a patterned coil on the second substrate.

6. The camera device of claim 5, comprising:

a coupling member coupled to a lower surface of the base and including a hole through which the electric wire passes,

wherein the base includes a hole through which the wire passes,

wherein the first substrate includes a hole through which the wire passes,

wherein the second substrate includes a recess recessed inward from an outer circumference of a corner of the second substrate to avoid the electric wire, and

wherein the other end of the electric wire is coupled to the coupling member by solder.

7. The camera device of claim 1, wherein the holder includes a protrusion protruding from a lateral surface of the holder,

wherein two of the protrusions of the retainer are formed on each of four lateral surfaces of the retainer, and

wherein a distance between the protrusion of the retainer and the side plate of the cover is a shortest distance between the retainer and the side plate of the cover.

8. The camera device according to claim 2, wherein the holder includes a hole penetrating the holder in a direction parallel to the optical axis to expose an upper surface of the magnet, and

Wherein a portion of the upper elastic member has a shape corresponding to a shape of a portion of the hole of the holder.

9. The camera device according to claim 2, wherein the upper elastic member and the groove of the holder do not overlap in a direction parallel to the optical axis.

10. The camera device according to claim 1, wherein the coil faces the magnet in a direction parallel to the optical axis.

11. A camera apparatus, comprising:

a printed circuit board;

the sensor is arranged on the printed circuit board;

a base coupled to the side plate of the cover;

a retainer disposed in the base;

a magnet and a coil configured to move the holder relative to the base;

a lens having an optical axis and coupled to the holder; and

a filter coupled to the holder and disposed between the lens and the sensor;

Wherein the retainer comprises a groove,

12. The camera device of claim 11, comprising:

a lateral elastic member movably connecting the holder to the base; and

an upper elastic member connecting the retainer and the lateral elastic member.

13. The camera device according to claim 12, wherein the inner yoke includes a first inner yoke and a second inner yoke opposite to each other, and

wherein the upper elastic member is not disposed between the first inner yoke and the second inner yoke.

14. The camera device according to claim 13, wherein the inner yoke includes a third inner yoke and a fourth inner yoke opposite to each other, and

wherein the upper elastic member is not disposed between the third inner yoke and the fourth inner yoke.

15. A camera apparatus, comprising:

a printed circuit board;

the sensor is arranged on the printed circuit board;

a stator including a base coupled to the side plate of the cover and a coil disposed on the base;

a mover including a holder spaced apart from the base, a magnet disposed on the holder and facing the coil, and an upper elastic member coupled to the holder; an electric wire connecting the stator and the upper elastic member of the mover, an

A lens having an optical axis and coupled to the holder; and

a filter coupled to the holder and disposed between the lens and the sensor;

wherein the holder includes a groove formed on an upper surface thereof,

wherein the upper elastic member and the groove of the holder do not overlap in a direction parallel to an optical axis,

16. The camera device of claim 15, wherein the lens is coupled to the holder to move integrally therewith, and

wherein the holder and the magnet are coupled by an adhesive.

17. The camera device of claim 15, wherein the retainer is integrally formed.

18. The camera device according to claim 15, wherein the coil includes a first coil and a second coil disposed opposite to each other with respect to the optical axis,

wherein when a current is applied to the first coil and the second coil, a repulsive force is generated between the first coil and the magnet and an attractive force is generated between the second coil and the magnet.

19. The camera device according to claim 18, wherein the coil includes a third coil and a fourth coil disposed opposite to each other with respect to the optical axis, and

wherein when a current is applied to the third coil and the fourth coil, a repulsive force is generated between the third coil and the magnet, and an attractive force is generated between the fourth coil and the magnet.

20. An optical device, comprising:

a main body;

a display disposed on the main body; and

the camera device of any one of claims 1 to 19, provided on the main body.